import "server-only"

import { PaymentMethodEnum } from "@scandic-hotels/common/constants/paymentMethod"
import { createCounter } from "@scandic-hotels/common/telemetry"

import * as api from "../../../api"
import {
  badGatewayError,
  extractResponseDetails,
  serverErrorByStatus,
} from "../../../errors"
import { toApiLang } from "../../../utils"
import { createBookingSchema } from "./schema"

import type { CreateBookingInput } from "../../../routers/booking/mutation/createBookingRoute/schema"

export async function createBooking(input: CreateBookingInput, token: string) {
  validateInputData(input)

  const createBookingCounter = createCounter("trpc.booking.create")

  const metricsCreateBooking = createBookingCounter.init({
    ...input,
    rooms: input.rooms.map(({ guest, ...room }) => {
      const { becomeMember, membershipNumber } = guest
      return { ...room, guest: { becomeMember, membershipNumber } }
    }),
  })

  metricsCreateBooking.start()

  const apiResponse = await api.post(
    api.endpoints.v1.Booking.bookings,
    {
      headers: {
        Authorization: `Bearer ${token}`,
      },
      body: input,
    },
    { language: toApiLang(input.language) }
  )

  if (!apiResponse.ok) {
    await metricsCreateBooking.httpError(apiResponse)

    const apiJson = await apiResponse.json()
    if ("errors" in apiJson && apiJson.errors.length) {
      const error = apiJson.errors[0]
      return { error: true, cause: error.code } as const
    }

    throw serverErrorByStatus(
      apiResponse.status,
      await extractResponseDetails(apiResponse),
      "createBooking failed"
    )
  }

  const apiJson = await apiResponse.json()
  const verifiedData = createBookingSchema.safeParse(apiJson)
  if (!verifiedData.success) {
    metricsCreateBooking.validationError(verifiedData.error)
    throw badGatewayError({
      message: "Invalid response from createBooking",
      errorDetails: { validationError: verifiedData.error },
    })
  }

  metricsCreateBooking.success()

  return verifiedData.data
}

function validateInputData(input: CreateBookingInput) {
  if (!input.payment) {
    return
  }

  if (input.payment.paymentMethod !== PaymentMethodEnum.PartnerPoints) {
    return
  }

  if (!input.partnerSpecific?.eurobonusAccessToken) {
    throw new Error(
      "Missing partnerSpecific data for PartnerPoints payment method"
    )
  }
}